Heating apparatus



June 29 1926.

R. A. IRLE' HEATING APPARATUS Filed May 15. 1923 vh'i Patented June 29, 192 6.

UNITED STATES PATENT OFFICE.

RENE AUGUSTE IRLE, OI BORDEAUX, FRANCE.

HEATING APPARATUS.

Application filed May 15, 1923, Serial No. 639,155, and in Belgium May 20, 1922.

The object of my present invention is to provide a rational heating device for heat ing rooms and places from the bottom parts thereof, said device being capable of being supplied from any known industrial source of heat. Said device is generally applicable though adapted more particularly to postal cars and passenger cars used on railways.

The vention has for its object to solve the problem in every case without the objections arising from the use of the means just described.

In the accompanying drawings:

Fig. 1 is a longltudinal section, showing the heating device as applied to a postal car.

Fig. 2 is an elevation of the cleaning door of the furnace provided with a particular locking device.

Referring to Fig. 1, the heating is ob tained by hot water circulation within a pipe arranged below the feet of the postmen, for instance in the existing skirting boards arranged at the bottom of the sorting tables.

Provisions are made to prevent the average temperature from rising above (1., whichis suflicient to heat the car and not harmful to the contents of bags placed on the floor of the car. The radiating heat will thus be diffused through the entire car.

The circulating water is heated within a boiler A, either by means of steam'from the locomotive or hot air or a mixture of steam and hot air or the like, passing through a coil B, or by means of the driving electric current passing through heating coils C, or by means of liquid or solid fuel burned within a stove D. it being possible toautomatically cut ofi the air supply and thereby extinguish the fire as soon as the car is supplied with steam, hot air or a mixture of steam and hot air, or electric current, and prevent the stove from being lighted again so long as anyone of said sources of heat is used.

The air supply to the fire within the stove will be cut off by means of a piston E which when actuated by the pressure of steam will heating device according to my in the fire,

close the door F of the air inlet F as well as the damper G arranged within the exhaust pipe for combustion gases from the stove.

The same result can also be obtained by electric current to act on an elec- H actuating said door F and causing the tro-magnet damper G". Springs or balanceweights brought into actlon as soon as steam. or

will be the electric current is cut ofii' so as to make the stove operabl e again. Therefore the heating of the car Wlll always be insured either by one means or by the other. over said parts may be provided with alarm Moreor recording devices, whereby the periods during which heat motive may be ascertained.

The stoveB may be cleaned door P, illustrated was supplied by the locothrough a in Fig. 2, which must be normally closed and the locking device of which is mechanically connected to the part F, in such a way opened by dentallyor if it is unless the let G are prevented from being that said door cannot be unauthorized persons or accidesired to light or stir up air inletF and gas outclosed whereby the stove will be lighted and operated.

, Hot water leaving the boiler A will flow through the circuit J, K,, L, M, N owing to the difl'erence'of specific weight of the two columns of water J K and L M and the cooling of the water in the section K L of the circuit, where the piping is housed within a suitable heat insulator, the action of which may be adjusted as desired.

Water will circulate immediately as soon as the apparatus is in operation.

. The. piping, mg surface that hot water rea insulator thereof and radiatof the tube Q are designed so ches M at a temperature of about 60 C, the branch pipes such as Q, are also designed to obtain the same result.

will be utilized cold air reaching the shoulders of top of the car,

men through the more intensiveghea the post- -while the t radiating from the vertical tubes Q and Q will be used to heat air near the doors, windows and the like. The arrangement adopted for the hot water circuit J, K, L, M, N with the section K L insulated and the arrangement of the boiler A above the plane of the heated section M N of the floor permits only a very low circulating power, Wherefore pipes of large section and a considerable quantity of water must be used.

However the tubes and the mass of water they contain together with the volume of water contained in the boiler constitute a ieat reservoir which, when the car is separated from the train, will continue the heating for a rather long time without it being necessary to bring the fuel stove into operation. Ifit is desired to obtain the maximum advantage from said heat reservoir, the heat insulation of the car may be increased by lining the ceiling thereof with a' number of layers formed of corrugated cardboard, doubling the glasses of the top windows and suitably arranging the curtains of the windows and the like.

However I also contemplate the necessity of having conduits of smaller cross section Without interfering with the proper circulation of water. To this end it will be sufficient to heat the cold return column N by means of a branch pipe such as Q extending from the conduit in closeproximity to K. The water rising through N will then be less cold and therefore less dense, the effect of which is to increase the circulating power of the'circuit and compensate for the lessening of the cross section of the conduits.

The parts being arranged as described, the branch pipe Q may serve, besides the purpose mentioned, to increase the effectiveness of the radiating action of the circuit, because the increase of circulating power accelerates the circulation of hot water, which thus flows at a higher temperature through the radiators arranged in the heating boards and the like, or in drying-stoves, cooking ovens, recipients and the like used for instance in dining-cars.

The devices are provided to operate under very low steam pressure and a reducing valve 0 arranged in the steam supply pipe serves to reduce the pressure thereof to the desired degree, whatever be the position ofv the car in the train.

The heating of the boiler A may be regulated by means of a regulating device actuated by hand or automatically and actingon:

1. The steam.inlet valve for the coil B.

2. The supply of electric current to the heating coils C.

3. The door F of the air inlet F in the stove; D and the damper G. in the exhaust pipe for burnt gases.

4. The cut ofi G in the water circuit.

The boiler is secured on its ashpit in such a way that should it be torn away by a Violent shock the water jacket will be torn away adjacent the furnace. To this end the boiler and ashpit are connected together by means of bolts such as R,R which will be out if a violent shock acts on the boiler.

Care is taken to avoid freezing of the circulating water during the time the car is at rest as well as the heavy dama s which would result from such freezingfiiy mixing the usual percentage of ingredients such as glycerin with the water. This ingredient has moreover the advantage of preventing oxidation of the metallic parts in contact with water. A tank S in communication with the outer atmosphere serves to replenish the system as may be required.

I also prefer to use a combined exhauster and wind vane arranged on the top of the car at, the end of the exhaust pipe for the purpose of improving the draft.

Having now fully described my said invention, what I claim and desire to secure by. Letters Patent, is:

1. In a heating device, a Water reservoir, a water circuit connected thereto for the circulation of heated water therefrom, a

stove for heating the water in said reservoir, a steam coil for heating the water in said reservoir, and an electrically operated heater for heating the water in said reservoir, and means for automatically cutting off the air supply to the stove during the operation of either of the other heat sources for heating said water.

2. In a heating device, a water reservoir, a water circuit connected thereto for the circulation of heated water therefrom, a stove for heating the water in said reservoir, a steam coil for heating the water in said reservoir, and an electrically operated heat er for heating the water in said reservoir, a door for admitting air to the stove, and means for automatically closing said door during the operation of either of said other sources of heat.

3. In a heating device,- a water reservoir, a. water circuit connected thereto for the circulation of heated water therefrom, a stove for heating the water in said reservoir, a steam coil for heating the water in said reservoir, and an electrically operated heater for heating the water in said resersaid steam coil to operate the piston and close the door to cut ofi the stove. I

In testimony whereof I have hereunto set my hand.

RENE AUGUSTE IRLE.

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